This is a test of scrambled email to user@well.com.
That displays as a sample email address for "user" at the "well.com" domain and links to the displayed email address, but the phrase "mailto:" and the email address "user@well.com" appear nowhere in the html file.
As a result, searching the source .html file's code for "mailto:" or the "@" symbol will yield nothing.
Go ahead and view the source from your browser.